This fish tank round hole drainage connector is designed to provide efficient water drainage for your aquarium. The flat head design ensures a secure fit, preventing leaks and ensuring smooth water flow. Ideal for seafood tanks, this drainage accessory is proper for maintaining a clean and healthy aquatic environment. Easy to install, it fits seamlessly into your existing setup. Features -Color:Assorted Color -Material:PVC -Size:7.00X6.97X6.97cm/2.75X2.74X2.74in -Recommended opening diameter: 51-53 mm. -Recommended fish tank thickness: within 26 mm. -Hose connector part inner diameter: 50 mm. -Easy installation: the round hole drain connector for fish tanks and seafood pools is designed for simple and quick installation, making it user-friendly and convenient -Firm: made from excellent materials, this drain connector is built to last and resistant to damage, ensuring longterm use -Versatile design: suitable for various scenarios such as fish tanks and seafood pools, it effectively drains water and maintains water quality -Tight connection: the connector is designed to fit tightly, preventing leaks and ensuring better drainage performance -Meets multiple needs: this product is versatile and can meet a variety of requirements for different water tanks and aquariums Package list: 9 x drain joints